If you are thinking of converting a disused or flooding cellar/basement to a new wine cellar or office, even an extra bedroom, MacLennan can help. Expert work and guaranteed.

MacLennan carry out basement conversions every week, we convert unused damp or flooding basements into basement gyms, cinemas swimming pools, we convert cellar into bedrooms, flats kitchens etc and MacLennan can make sure your basement / cellar will be permanently watertight.

We will either make a site visit, design you a specification and quotation to suit your needs or work off previously generated architectural plans which you can send by email.

When we come to the site to design your waterproofing system, we will supply you with a comprehensive report and drawings to show you exactly what we propose to do. If we carry out the work we will accept the design liability. MacLennan have a number of ways of waterproofing basements and cellars.

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    BASEMENT CONVERTION
    - Lower Farm
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    3D DRAWING
    Typical Section Through Sump Pit
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    BASEMENT CONVERTION
    - Roundhill
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    3D DRAWING
    Damp Proofing Cavity Membrane System
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The cavity drain membrane system is one example and requires very little preparation as it is mechanically fixed and not designed to come under water pressure. However, if the basement / cellar is tanked this would cause additional stresses to the walls from hydrostatic pressure and this could lead to the tanking system failing.

MacLennan has the experience and knowledge to know exactly which system will fit and work best for your basement conversion project. The good thing about our systems is that when the membrane has been installed, no additional stresses are caused because we are allowing the water to come through the wall, down the membrane into a channel where it with either be pumped away using a sump and pump with battery back up or it will naturally feed into a soak away. The channel is critical and yet a great many systems are installed without the channel so are not serviceable and do not comply with BS8102.

Once the membrane has been installed on the floor and walls, you then get a choice of how you want it finished, whether it’s a standard screeded floor and dry lined walls to under floor heating and fancy marble faced block-work.

MacLennan can cater for all needs and requirements, we also specialise in sympathetic historical building waterproofing.

MacLennan is renowned in the country for excellent customer service and attention to detail. We offer a membrane system that comes with a quick installation to allow complete basement conversions on time and on budget. Contact MacLennan now and let us handle your basement waterproofing. We are confident in our services and have been for the past 30 years. To prove this, we offer a rolling 10-year insurance backed guarantee which covers design, installation and materials. Most guarantees are from manufacturers and do not cover design or installation. The MacLennan guarantees give you complete cover and peace of mind.

MacLennan are accepted by banks and mortgage lenders and insurance companies nationwide. What else are you waiting for?

Get in touch!

Ready to start a project or require more information about us?
Call us about your project or problem and we will be happy to help.


Call us today on:

0845 658 7777
Or email us here